Alpha Detector - Model 43-44
CE Seal
Specifications

INDICATED USE: alpha survey
SUGGESTED INSTRUMENTS: Models 12, 16, 18, 2000, 2200, 2221, 2241, 2350-1, 177-61
WINDOW AREA: 76 cm² (11.8 in²) active; 50 cm² (7.8 in²) open
WINDOW: 0.4 mg/cm² metalized polyester
EFFICIENCY (4π): 8% for 239Pu
OPERATING VOLTAGE: altitude sensitive
sea level: 2050 volts
609.6 m (2000 ft): 2000 volts
1524 m (5000 ft): 1925 volts
2134 m (7000 ft): 1875 volts
COUNTER THRESHOLD SETTING: 1.5–2.0 mV
WORKING ENVIRONMENT: splashproof shields and desiccant vented chamber for outdoor use
SIZE: 10.2 x 6.4 x 22.9 cm (4 x 2.5 x 9 in.) (H x W x L)
WEIGHT: 0.5 kg (1 lb)